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应用Compton散射模型、平均原子模型和碰撞-辐射模型,研究了超强激光等离子体推进机制,提出了将入射光和Compton散射光作为超强激光等离子体推进新机制,给出了束缚电子占据概率和流体力学修正方程,得到了O、Ne、N、Xe的等离子体烧蚀压、等效烧蚀深度和烧蚀速度随入射激光功率密度变化的模拟结果。结果表明:与散射前相比,随着激光功率密度增大,Xe烧蚀压最大,其次是Ne、O、N;O等效烧蚀深度最大,其次是N、Xe、Ne;Ne弛豫时间最长,其次是O、N、Xe;Xe烧蚀速度最快,其次是Ne、O、N。采用含电子多的轻元素超强激光等离子体,有利于等离子体整体推进。
The Compton scattering model, the average atomic model and the collisional-radiation model are used to study the mechanism of the superlaser laser plasma propulsion. A new mechanism is proposed to push incident light and Compton scattered light as the superlaser laser plasma. The bound electron occupancy probability And the equations of fluid mechanics, the simulation results of plasma ablation pressure, equivalent ablation depth and ablation velocity of O, Ne, N, Xe with the variation of incident laser power density have been obtained. The results show that the Xe ablation pressure is the largest, followed by Ne, O and N with the increase of the laser power density compared with that before scattering. The equivalent ablation depth is the largest, followed by N, Xe, Ne and Ne relaxation The longest time, followed by O, N, Xe; Xe ablation fastest, followed by Ne, O, N. The use of more electron-rich ultra-strong light laser plasma, is conducive to the overall progress of the plasma.